roland/xo-alloc
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity Actions

xo-imgui: refactor: move create_instance to .cpp + streamline

Browse source
This commit is contained in:
Roland Conybeare 2025-11-11 00:42:51 -05:00
commit 425fe3c764
3 changed files with 65 additions and 59 deletions
Download patch file Download diff file Expand all files Collapse all files

53
xo-imgui/example/ex4a/VulkanApp.cpp
View file

@ -36,14 +36,59 @@ MinimalImGuiVulkan::init_vulkan() {
this->create_surface();
this->pick_physical_device();
this->create_logical_device();
this->createSwapchain();
this->createImageViews();
this->createRenderPass(); // must come before createFrameBuffers
this->createFramebuffers();
this->create_swapchain();
this->create_image_views();
this->create_render_pass(); // must come before createFrameBuffers
this->create_framebuffers();
this->create_command_pool();
this->create_command_buffers();
this->create_sync_objects();
this->create_descriptor_pool();
}
void
MinimalImGuiVulkan::create_instance() {
VkApplicationInfo appInfo{};
appInfo.sType = VK_STRUCTURE_TYPE_APPLICATION_INFO;
appInfo.pApplicationName = "ImGui Vulkan App";
appInfo.applicationVersion = VK_MAKE_VERSION(1, 0, 0);
appInfo.pEngineName = "No Engine";
appInfo.engineVersion = VK_MAKE_VERSION(1, 0, 0);
appInfo.apiVersion = VK_API_VERSION_1_0;
VkInstanceCreateInfo createInfo{};
createInfo.sType = VK_STRUCTURE_TYPE_INSTANCE_CREATE_INFO;
createInfo.pApplicationInfo = &appInfo;
uint32_t extensionCount = 0;
if (!SDL_Vulkan_GetInstanceExtensions(window_, &extensionCount, nullptr)) {
throw std::runtime_error("Failed to get SDL Vulkan extensions!");
}
std::vector<const char*> extensions(extensionCount);
if (!SDL_Vulkan_GetInstanceExtensions(window_, &extensionCount, extensions.data())) {
throw std::runtime_error("Failed to get SDL Vulkan extensions!");
}
#ifdef __apple__
// Add portability extension for MoltenVK (macOS)
extensions.push_back(VK_KHR_PORTABILITY_ENUMERATION_EXTENSION_NAME);
#endif
createInfo.enabledExtensionCount = extensions.size();
createInfo.ppEnabledExtensionNames = extensions.data();
createInfo.enabledLayerCount = 0;
#ifdef __apple__
// CRITICAL: Enable portability enumeration flag for MoltenVK
createInfo.flags |= VK_INSTANCE_CREATE_ENUMERATE_PORTABILITY_BIT_KHR;
#endif
int result = vkCreateInstance(&createInfo, nullptr, &(this->instance_));
if (result != VK_SUCCESS) {
printf("vkCreateInstance failed with error: %d\n", result);
throw std::runtime_error("Failed to create instance!");
}
}
/* end VulkanApp.cpp */